Electric kettle



FIG. 1 is a perspective view of an electric kettle showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a back elevational view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawing depict portions of the electric kettle that form no part of the claimed design. 

CLAIM The ornamental design for an electric kettle, as shown and described. 